But could he deliver?

摘要

This has been an extraordinary week for the man who could become America's first black president. Barack Obama has now won all eight of the primaries and caucuses held since Super Tuesday on February 5th, which ended, more or less, in a dead heat with Hillary Clinton. He has won by much larger margins than most people expected, trouncing his rival not just in heavily black states, such as Louisiana, but in ones that are almost completely white, such as Maine. On February 12th he took all three prizes in the "Potomac primary"-Washington, dc, Maryland and, by a socking 29-point margin, Virginia.